Effect of N fertilizer on the productivity and nutritive values of perennial grass mixtures in the alpine region of Qinghai-Tibetan Plateau, China
文献类型：期刊论文
| 作者 | Dong, SK; Yang, ZF; Long, RJ; Hu, ZZ; Kang, MY |
| 刊名 | canadian journal of plant science
 |
| 出版日期 | 2005-04-01 |
| 卷号 | 85期号:2页码:361-368 |
| 关键词 | nitrogen levels herbage dry matter yield leaf shoot ratio crude protein contents dry matter degradability |
| 合作状况 | 其它 |
| 中文摘要 | a study was conducted on grass mixtures that included smooth bromegrass (sb) + drooping wild ryegrass (dw), smooth bromegrass + siberian wild ryegrass (sw) + crested wheatgrass (cw) and smooth bromegrass + siberian wild ryegrass + drooping wild ryegrass + crested wheatgrass in the alpine region of qinghai-tibetan plateau. the study was conducted from 1998 to 2000 to investigate the effects of n application rates and growing year on herbage dry matter (dm) yield and nutritive values. herbage dm production increased linearly with n application rates. the effect of n application on dm yields was greater (p < 0.05) in the 2nd and 3rd production years than in the establishment year. dry matter yields of sb + sw + cw and sb + sw + dw + cw can reach as high as 15 000 kg ha(-1) at 345 kg ha(-1) n rate in the 3rd growing year. with increased n application rates, crude protein (cp) contents and 48 h in sacco dm degradability of grasses increased (p < 0.05). no effect (p > 0.05) of n application was detected on organic matter (om) and acid detergent fibre (adf) concentration. it can be concluded that for increased biomass production in the alpine region of the qinghai-tibetan plateau, a minimum of 345 kg n ha(-1) should be applied to grass stands in three split application of 115 kg n ha(-1), in early june, early july and late july |
| 英文摘要 | a study was conducted on grass mixtures that included smooth bromegrass (sb) + drooping wild ryegrass (dw), smooth bromegrass + siberian wild ryegrass (sw) + crested wheatgrass (cw) and smooth bromegrass + siberian wild ryegrass + drooping wild ryegrass + crested wheatgrass in the alpine region of qinghai-tibetan plateau. the study was conducted from 1998 to 2000 to investigate the effects of n application rates and growing year on herbage dry matter (dm) yield and nutritive values. herbage dm production increased linearly with n application rates. the effect of n application on dm yields was greater (p < 0.05) in the 2nd and 3rd production years than in the establishment year. dry matter yields of sb + sw + cw and sb + sw + dw + cw can reach as high as 15 000 kg ha(-1) at 345 kg ha(-1) n rate in the 3rd growing year. with increased n application rates, crude protein (cp) contents and 48 h in sacco dm degradability of grasses increased (p < 0.05). no effect (p > 0.05) of n application was detected on organic matter (om) and acid detergent fibre (adf) concentration. it can be concluded that for increased biomass production in the alpine region of the qinghai-tibetan plateau, a minimum of 345 kg n ha(-1) should be applied to grass stands in three split application of 115 kg n ha(-1), in early june, early july and late july. |
| WOS标题词 | science & technology ; life sciences & biomedicine |
| 学科主题 | 农业科学 |
| 类目[WOS] | agronomy ; plant sciences |
| 研究领域[WOS] | agriculture ; plant sciences |
| 关键词[WOS] | dry-matter yield ; bromegrass ; nitrogen ; quality ; timothy ; digestibility ; performance ; recovery ; rumen |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000228942700007 |
| 公开日期 | 2009-12-09 |
| 源URL | [http://ir.nwipb.ac.cn/handle/363003/1373]  |
| 专题 | 西北高原生物研究所_中国科学院西北高原生物研究所 |
| 作者单位 | 1.Beijing Normal Univ, State Key Lab Environm Simulat & Pollut Control, Sch Environm, Beijing 100875, Peoples R China 2.Chinese Acad Sci, NW Plateau Inst Biol, Xining 810001, Peoples R China 3.Gansu Agr Univ, Grassland Sci Coll, Lanzhou 730070, Peoples R China 4.Beijing Normal Univ, Coll Resources Sci, Beijing 100875, Peoples R China |
| 推荐引用方式 GB/T 7714 | Dong, SK,Yang, ZF,Long, RJ,et al. Effect of N fertilizer on the productivity and nutritive values of perennial grass mixtures in the alpine region of Qinghai-Tibetan Plateau, China[J]. canadian journal of plant science,2005,85(2):361-368. |
| APA | Dong, SK,Yang, ZF,Long, RJ,Hu, ZZ,&Kang, MY.(2005).Effect of N fertilizer on the productivity and nutritive values of perennial grass mixtures in the alpine region of Qinghai-Tibetan Plateau, China.canadian journal of plant science,85(2),361-368. |
| MLA | Dong, SK,et al."Effect of N fertilizer on the productivity and nutritive values of perennial grass mixtures in the alpine region of Qinghai-Tibetan Plateau, China".canadian journal of plant science 85.2(2005):361-368. |
入库方式： OAI收割
来源：西北高原生物研究所
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